package com.changgou.controller;

import com.changgou.common.pojo.Result;
import com.changgou.common.pojo.StatusCode;
import com.changgou.file.util.FastDFSClient;
import com.changgou.util.FastDFSFile;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/file")
public class FileController {

  @PostMapping("/upload")
  public Result uploadFile(MultipartFile file){
    try{
      //判断文件是否存在
      if (file == null){
        throw new RuntimeException("文件不存在");
      }
      //获取文件的完整名称
      String originalFilename = file.getOriginalFilename();
      if (StringUtils.isEmpty(originalFilename)){
        throw new RuntimeException("文件不存在");
      }

      //获取文件的扩展名称  abc.jpg   jpg
      String extName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);

      //获取文件内容
      byte[] content = file.getBytes();

      //创建文件上传的封装实体类
      FastDFSFile fastDFSFile = new FastDFSFile(originalFilename,content,extName);

      //基于工具类进行文件上传,并接受返回参数  String[]
      String[] uploadResult = FastDFSClient.upload(fastDFSFile);

      //封装返回结果
      String url = FastDFSClient.getTrackerUrl()+uploadResult[0]+"/"+uploadResult[1];
      return new Result(true, StatusCode.OK,"文件上传成功",url);
    }catch (Exception e){
      e.printStackTrace();
    }
    return new Result(false, StatusCode.ERROR,"文件上传失败");
  }
}
